285 results about "Matrix method" patented technology

Methods of making a three-dimensional matrix of nucleic acids within a cell is provided.

Methods and devices are provided for reducing the concentration of low molecular weight compounds in a biological composition containing cells while substantially maintaining a desired biological activity of the biological composition. The device comprises highly porous adsorbent particles, and the adsorbent particles are immobilized by an inert matrix.

This invention relates to computational methodologies for improving the selection, testing, quality control, and manufacture of herbal compositions, and to help guide the development of new herbal compositions and identify novel uses of existing herbal compositions. More specifically, this invention relates to a process of encoding two or more biological and/or chemical data into a matrix fingerprint, and the statistical/probabilistic manipulation of such matrix fingerprints for the testing and improvement of herbal compositions.

Methods and devices are provided for reducing the concentration of low molecular weight compounds in a biological composition, while substantially maintaining a desired biological activity of the biological composition. The device comprises highly porous adsorbent particles, and the adsorbent particles are immobilized by an inert matrix. The matrix containing the particles is contained in a housing, and the particles range in diameter from about 1 μm to about 200 μm. The matrix can be fibrous, and the particles can have a surface area greater than 750 m²/g and a pore diameter between about 25 and 800 Å. The device can be used to adsorb and remove a pathogen-inactivating compound that is a nucleic acid-binding compound such as psoralen, an acridine derivative or a dye from a biological composition such as a blood product.

Methods and apparatus for enabling effective decoding of rate-compatible punctured codes are presented herein. A puncturing component can derive one or more partial puncturing patterns and corresponding decoding matrices/graphs that represent punctured code from a parity check matrix/graph of a mother code and a puncturing pattern specified for the mother code. Further, a rowcombining component can combine rows of the parity check matrix/graph based on the derived one or more partial puncture patterns. Further, the rowcombining component can create at least one decoding matrix/graph to represent the punctured code based on the combined rows. In addition, a selection component can select a decoding matrix/graph from the created at least one decoding matrix/graph that does not contain a girth-4 cycle.

A system and method of receiving orders, placing orders in an order matrix, determining potential production periods for an order, rescheduling orders, and generating a bill of materials. The method receives an order having one or more tokens out of a set of possible tokens. Each token is a combination of a characteristic and a value of the characteristic. The orders are placed in an order matrix. An order restriction matrix for the orders is generated based on certain selection conditions. The method then examines the restrictions that apply to the order and derives an order derived production restriction matrix for the order, which is evaluated to determine possible production periods for the order. The order matrix may also be used to generate a bill of materials.

The invention discloses a method for analyzing the shafting torsional vibration of a turbo-generator set, which belongs to the technical field of power and large rotating machinery manufacture. The method comprises the following steps: firstly, segmenting a shafting body, and determining the external diameter, internal diameter and length of each shaft segment; secondly, calculating equivalent parameters of a shafting, including the rotation inertia and stiffness of each shaft segment; thirdly, calculating the rotation inertia of blades by finite integration technique; fourthly, modeling the shafting of which the shafting body is segmented into a concentrated mass block-spring model; fifthly, calculating the external torque of a shafting torsional vibration model; and finally, calculating shafting torsional vibration response by a Newmark-beta method and a Riccati increment transfer matrix method. The method takes non-linear factors into account during the analysis of shafting torsional vibration, and avoids the influences of the change of torsional vibration patterns with time and space on an analysis result.

The invention discloses a fault-tolerant control method for a networked control system with time-varying delay. In view of conditions of parameter perturbation, time-varying delay, external disturbance and random failure happening to an actuator, a discrete time closed-loop nonlinear networked control system model is firstly built, a Lyapunov-Krasovskii function with the delay information is then built, a Lyapunov stability theory and a linear matrix inequality analysis method are used, sufficient condition for asymptotic stability of the nonlinear networked control system and existence of an H-infinity fault-tolerant controller are obtained, a Matlab LMI toolbox is used for solution, and a gain matrix for a non-fragile fault-tolerant controller is: K=K<->P; and conditions for optimizing the minimum disturbance rejection rate gamma is given, and the controller gain matrix K<*> optimized under the minimum disturbance rejection rate gammamin= square root of e is acquired. The condition of time-varying delay existing in the system is considered, the time-varying delay is analyzed and processed based on a free-weighting matrix method, and the conservation is reduced.

The invention discloses a security risk early warning measurement and judgment method of foundation pit tunnel engineering. According to the practical monitoring data of each monitoring program of the foundation pit tunnel engineering and various influence factors including an early warning factor, an early warning amount and the like of each monitoring program, mining analysis is carried out through methods including hierarchy analysis, fuzzy comprehensive evaluation and the like, a security state discrimination or risk prediction matrix method under various influence factors is established, a security risk or early warning situation of the engineering is calculated and judged, the oneness, the subjectivity and the retardance of the security risk early warning level discrimination of the engineering are overcome, the information construction, the security risk dynamic control, the early warning, the response and the disposal of the engineering can be effectively guided, the scientificity, the rationality and the standardization of the security risk early warning of the engineering in the foundation pit tunnel engineering can be realized, and the security risk precontrol and management level of foundation pit tunnel construction is improved.

The invention belongs to the technical field of power system dispatching automation, particularly relates to a robust scheduling method considering uncertainty of wind power and load prediction, whichcomprises the following steps of: describing the correlation between input load fluctuation and a prediction error of wind power output by using a correlation coefficient matrix method, and converting random variables with correlation into mutually independent random variable matrixes by using a Cholesky decomposition method; Constructing a probability density model of prediction errors of wind power output and load fluctuation by adopting non-parameter kernel density estimation; Introducing the direct-current power flow model into a power system dispatching model, and establishing an objective function and a constraint condition under the condition of uncertain factors by taking the minimum total dispatching operation cost of the system as an objective function of the model; adopting Benders decomposition method to solve a UC main problem of a robust SCUC problem, a network security check sub-problem of the UC main problem under a basic scene, and a network security check sub-problemunder an uncertain scene of new energy power generation and load.

The invention discloses a method for accurately computing unloaded cable shapes of suspension bridges with spatial cable planes. The method includes steps of setting preliminary deviation quantities;solving tangent points and horizontal force of various span main cables at main cable saddles at the moment; solving the difference delta H of horizontal force of mid-span and side span of the main cables under the preliminary deviation quantities; outputting the preliminary deviation quantities and the unloaded cable shapes under the preliminary deviation quantities if the delta H is smaller thanpermissible error values, or correcting the preliminary deviation quantities of the main cable saddles by the aid of influence matrix processes according to difference values and repeatedly carryingout the first, second, third and fourth steps until errors are smaller than the permissible error values. The method has the advantages that the method actually includes internal and external double-layer circulation, the tangent points of the various span main cables and the main cable saddles under the preliminary deviation quantities are solved by means of the inner-layer circulation, the preliminary deviation quantities are solved by means of the outer-layer circulation according to unbalanced force under the preliminary deviation quantities, only a single unknown number is available in each layer of circulation, and the method is excellent in solving efficiency and precision by the aid of the influence matrix processes under the condition that completed bridge tangent points are selected by initial values; correct results can be quickly solved by the aid of the method regardless of suspension bridges with parallel cable planes or the suspension bridges with the spatial cable planes.

The invention provides a method for extracting structured light strip center based on ridge tracing and Hessian matrix which belongs to the machine visual technique field. The method has aim for solving problem that the present method for extracting structured light strip center can not give attention to high precision and high speed. The method includes steps as follows: selecting a reliable tentative tracking point; solving sub-pixel grade precision light strip center point on a normal direction of the tentative tracking point by using Hessian matrix, rounding coordinates of the sub-pixel grade precision light strip center point and obtaining the present center tracking point; solving tangent of the center tracking point by using Hessian matrix, extending the center track point on the tangent direction according with a pixel step length and rouding for obtaining next tentative tracking point; repeating upper steps and solving all sub-pixel precision light strip center points in the light strip image. The method and the device provided by the invention has advantages of little processing image count number in ridge tracing method and high precision in Hessian matrix method, which can realize extracting the structured light strip center with high precision rapidly.

The invention discloses a master-slave heterogeneous robot universal control method and system based on master-slave space mapping. After an operator inputs connecting rod parameters of a master manipulator and a slave manipulator to the control system, the control system conducts mapping and conversion on the position, the speed and force of the master manipulator and the slave manipulator through the D-H parameter method and the Jacobian matrix method, and accordingly accurate control over the slave manipulator from the master manipulator is achieved. By means of the master-slave heterogeneous robot universal control method and system based on master-slave space mapping, mapping control over the master manipulator with any freedom degree and the slave manipulator with any freedom degreecan be achieved, accurate position and speed control over a robot at any slave manipulator end from any master manipulator end, accurate force feedback to the master manipulator from the slave manipulator is achieved, safety monitoring can be conducted on the system in real time, and very high universality and safety are achieved.

The invention provides an anti interference method of satellite navigation based on air time frequency architecture, combining the characteristics of an array antenna and an adaptive signal processing technique. The signal received by the array antenna is processed as a baseband signal. The baseband signal is processed for beamforming by the blocking matrix method to form a new digital baseband signal. Then the new digital baseband signals are processed by means of interference suppression, anti-interference processing, digital conversion and digital-to-analog conversion frequency processing. The anti interference method of satellite navigation based on air time frequency architecture suppresses narrowband signals, improves free degree of anti-interference processing, beneficial to improve the whole anti-interference ability. And the anti interference method of satellite navigation based on air time frequency architecture can be implemented on hardware platform such as FPGA, and can be applied to high dynamic scenes, such as on-board, airborne, etc.

Methods and compositions are provided for the treatment and repair of defect in the cartilage in partial- or full-thickness defects in joints of animals, in particular humans. To induce cartilage formation, a defect in cartilage is filled with layers of thin flaps of synovium or of peritendineum, which contains chondro- and osteo-progenitor cells, with interposed layers of a matrix. The matrix contains a chondrogenic factor, which induces chondrogenesis of chondroprogenitor cells in the flaps, and an anti-hypertrophic agent, which arrest differentiation of chondrocytes in an early phase, in an appropriate delivery system. The matrix filling the bone area of a full-thickness defect may contain an osteogenic factor, which induces osteogenesis of osteoprogenitor cells. The layer of a flap between cartilage and bone areas may work as a barrier, which prevents blood vessels and associated cells from penetrating from the bone area into the cartilage area. To promote the induction of chondro- and osteo-genesis of the progenitor cells in the flaps of synovium or peritendineum effectively, the flaps may be treated with enzymes, e.g., matrix metalloproteinases or be punched by a needle before filling a defect.

The invention discloses a multi-modal process fault detection method based on a local neighbor standardization matrix, and relates to an industrial process fault detection method. The method enables historical data at a normal state to serve as a training set of modeling data, and carries out multi-mode process modeling and fault detection through employing a local neighbor standardization matrix method. The method comprises the steps: carrying out the preprocessing of unequal-length batch data through employing a local weighting algorithm, determining the maximum retainable length of the unequal-length batch data in the training set, and reconstructing lost data points of the unequal-length batch data through weighing and k-neighbor information; constructing a main local neighbor standardization matrix for an equal-length training set, carrying out modal clustering through employing a K-means algorithm, and eliminating off-cluster samples at all modals through employing a local off-cluster factor method. The method can prevent information loss from affecting the modal clustering effect of a multi-modal process, eliminates off-cluster points, and enables the fault diagnosis result of a multi-modal intermittent process to be more accurate through the construction of the main local neighbor standardization matrix.

The invention discloses a Laplace cutout matrix method by using a moving least square method. The Laplace cutout matrix method by using the moving least square method uses a KNN neighbourhood to replace a space neighborhood, a linear relationship of non-neighborhood pixels on an alpha chart is acquired, the moving least square method is used for replacing a least square method, a moving Laplace matrix is calculated, and an alpha chart is obtained. The cutout Laplace matrix calculation method is improved, the moving least square method is used for replacing the least square method to deduce the moving Laplace matrix, and compared with the least square method, the moving least square method solution linear condition is more accurate. The KNN neighbourhood is used for replacing the space neighborhood, the Laplace matrix can reflect the relationship of alpha values of the non-neighborhood pixels, and a more accurate cutout Laplace matrix calculation method is obtained.

The invention discloses a method for setting the best distance between one-way matched roads, relative city traffic system managing technique, and traffic simulating technique. Wherein, it comprises following steps: 1, attaining the original data of one-way traffic network; 2, building relative project; 3, using VISSIM software to build simulating network; 4, according to actual traffic condition, selecting the evaluation standards in VISSIM software on vehicle, road, cross, and the whole road network, and building the evaluation standard database; 5, operating the VISSIM software to record the traffic simulated result; 6, based on said result, using matrix method to analyze the evaluation standard data; 7, building comparing matrix, calculating the weight of standards, checking the consistency of comparing matrix, and calculating integrated evaluation standard to find the sequence of several one-way traffic matched road distance methods; 8, finding the best distance of one-way matched roads.